. he's now a professor of political science and public policy at duke university. we thank you both for being with us. peter feaver, to you first. we heard governor romney today criticize the president broadly for not rejecting strongly enough america's influence in the world. yet when it came to specifics, we didn't hear many details. so let me just ask you about a couple of different places in the world. what about when it comes to iran. what exactly governor romney be doing differently right now? >> well, this is the criticism that the obama campaign has leveled at the romney campaign for not being detailed and specific enough. when it comes to iran, the president hasn't laid out a red line that he said clearly he would enforce. when asked to be precise about what it means for iran not to possess a nuclear weapon, the articulation of the red line, he's been vague and says he doesn't want to parse it further. i think there's a certain element of ambiguity about where you would draw the line precisely so as to avoid being trapped by it. but the other point to make is that president oba

on october 22. thank you both for being with us. >> woodruff: you can watch all of mitt romney's speech at v.m.i. today on our web site. >> brown: still to come on the newshour, a deadly meningitis outbreak; the stem cell breakthrough; rothenburg, page, and kohut on the campaign; and salman rushdie on life under a death sentence. but first, the other news of the day. here's hari sreenivasan. >> sreenivan: the investigation into the killing of the u.s. ambassador to libya took new turns today. cbs and abc news reported american officials in libya had asked for more security personnel, but the state department refused. meanwhile, libyan officials said president obama's top counterterror advisor, john brennan, will be in libya tomorrow to discuss the investigation. a warning from congress today: u.s. companies should stop doing business with china's top two telecommunications firms, huawei technologies and z.t.e. the house intelligence committee reported both have close ties to the government of china. it said using their components in u.s. computer networks could let them steal tra